Arbor support



May 22, 1934. B. P. GRAVES r Al.

ARBOR SUPPORT Filed July 2. 1931 2 Sheets-Sheet ATTORNEYS.

Mal? 22, 1934- u B. P. GRAVES Er AL 1,959,952

ARBOR SUPPORT Filed July 2, 1931 2 sheets-sheet 2 lli.

j the arbor and the over Patented May 22', 1934 UNITED STATES PATENT OFFICE Y ARBOR SUPPORT Benjamin P. Graves, Edgewood, and Arthur F.

This invention relates Bennett, West Barrington,

Manufacturing Company, a

Brown & Sharpe It. I., assignors to corporation of Rhode Island Application July 2, 1931, Serial No. 548,294

14 Claims.

to cutting machines,

more particularly to machines in which the cutter arbor is provided with an end support for example, such as in a milling machine, and has Which a bracket or arbor brace may be easily and quickly moved completely out of access to the cutter.

working position for Another object of the invention is the provision of an arbor brace which may be secured to the arbor yoke by a single nut or fastening means to facilitate securing or release to permit of various adjustments with a minimum amount of movement and effort required by the operator.

Another object of this invention is the provision of an arrangement to brace the arbor which may be swung entirely or swung back into workin out of working position g position without the necessity of lifting the weight thereof in so swinging.

A further object of the invention is the provision of a hinged brace in which the pintle hinge will be held in position by its own weight.

A still further object of the invention is an arrangement of b such a manner that the brace race upon a cutting machine in may be completely removed from the Vmachine when desired.

With these and other objectsand advantageous features in View, the invention consists of a novel arrangement of parts more fully disclosed in the Fig. 1 is a front elevation of a portion of the cutting machine showing our improved arbor support mounted thereon.

Fig. 2 is a sectional view through the knee or bed and traveling table portion of the machine showing in full lines the brace or arbor support,

Fig. 3 is a section on fragmental portion of the Fig. 4 is a front View of -arms for the arbor yoke.

line 3-3 of Fig. 2 of a machine. a fragmental portion of the machine with the brace removed from position and showing the brace to the machine.

Fig. 5 is a portion of ing one of the swinging bolts for brace in position.

In the operation mounting as attached a fragmental section showsecuring the of cutting machines such as gear cutting and milling machines and the like, it is desirable to support the cutter arbor at its outer end by braces extending upwardly from the knee or bed portion of the This arbor brace is` in suc frame of the machine. h position in front of the machine as to prevent the desired access to the cutter and consequently must be arranged to be moved or removed for changing the cutter or. loosened where adjustment alone is required, and in order to simplify the manual operations necessary in changing of cutters or the like, and to simplify the release for adjustment purposes, we have provided a single piece bracket hinged on a vertical axis at one side of the vertical plane through the cutter arbor, which may swing clear 6 of the arbor to permit the desiredV access thereto and by providing the same on a vertical pivot its entire weight is supported thus making it unnecessary for the operator to lift this bracket from inoperative position to operative position as is frequently necessary in machines which are now in use.

Further, by providing a single slot in the brace with a plate bridging the slot we permit of the use of a single bolt for clamping the arbor yoke to the bracket or releasing it therefrom for adjustment purposes. Also by this arrangement we permit the pintle pin to be held in position by its own weight which may be readily withdrawn to entirely remove the bracket When desired; and the following is a detailed description of the present embodiment of this invention illustrating the preferred means by which these advantageous results may be accomplished.

With reference to the drawings, 10 designates a portion of the frame of the cutting machine to which this invention is applied such as a milling machine from which there projects a knee or bed portion of the frame 11 upon which a work table 12 reciprocates. In the upper Vportion of the frame there is mounted a spindle 13 having a cutter arbor 14 projecting therefrom. From this frame there also projects double over-arms 15 for supporting the arbor yoke 17 in which the outer end of the arbor has a bearing in the usual manner. An abutment area formed by a boss 18 is provided on the arbor yoke 17 for the purposes hereinafter described.

A brace mounting member or bracket 19 shown in Fig. 4 as generally of triangular shape is provided with eyes 20'and 21 andv with abutment areas 22 and 23 formed by bosses extending therefrom which bracket 19 is secured to the frame, bed or knee 11 of the machine by suitable bolts 24 and 25'. A dowel 26 also assists in securing this `105 bracket or brace mounting member in position. With such a brace mounting member we may adapt machines for the use off a brace of this inventlon, although it should be understood that bosses 22 and 23 and the bearings or eyes 20 and 2l may be cast on the frame or knee if so desired.

The brace itself is designated 27 and is provided with bearings or eyes 28 and 29 which are positioned to align with the bearings or eyes 20 and 21 and through these aligned bearings there extends the pintle 30 having an enlarged head or handle portion 31 at its upper end which being in a vertical position is maintained by its own weight in the eyes with its enlarged handle or end 31 against the upper bearing 28. The brace is also provided with a vertical slot 32 positioned when the bracket is in working position in the vertical plane of the arbor 14 which receives the bolt 33 extending from the abutment area of the boss 18 for clamping a plate 34 in a position spanning the slot 32 and engaging the machined margins 35 thereof for binding the brace against the abutment area 18 of the arbor yoke for assisting in bracing the arbor while working.

The plate 34 is held in position by means of a flanged threaded member 50 and engaging the stud or bolt 33 extending from the boss 18 to bind the brace 27 against the abutment area on the arbor yoke.

When it is desired to adjust the cutter arbor the plate 34 is released by movement of the member 50 after which the arbor may be raised or lowered in the slot and bound again tightly against the brace, or should the brace be desired to be swung from position the plate 34 will be swung about the bushing from its horizontal to a vertical position to pass through the slot 32.

In order that the brace may be more rigid with the frame of the machine to better brace the arbor and prevent chattering or the like, we have provided additional clamping bolts and an open-- ing 36 in the brace with a restricted portion 37 through which a bolt 38 hinged in the boss 22 may be swung so that an enlarged portion or nut thereon may pass through the opening 36 to permit swinging of the brace from working position. We also hinge a bolt 40 in the boss 33 which extends through the slot 41, the edge of the bracket and which bolt upon loosening mav be swung through the slot 41 clear of the bracket for releasing the same to swing about its hinge for removing the same from operating position.

The hinge mounting of the bolts is illustrated in detail in Fig. 5, each of which has an enlarged portion 42 mounted upon a pivot 43 with a shank portion 44 and nut 45 to engage a suitable area 46 on the brace 27 for binding the brace in posi- "tion against the boss, on the bracket, bed or knee portion of the frame.

Y By the arrangement here shown, it is necessary to manipulate a single member 50 for adjusting the arbor, whereas for resetting the machine or removing the cutter the auxiliary bolts 38 and 40 must be released and moved to permit the brace to be swung about its hinge connection. This swinging, however, by means of the vertical hinge maintains the weight of the brace supported at all times making unnecessary for the operator to lift the brace to position.

'Ihe foregoingdescription is directed solely towards the construction illustrated, but we desire it to be understood that we reserve the privilege 'of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms ofthe appended claims.

1 We claim:

1. In a cutting machine having a frame and a horizontal cutter arbor, a brace member provided with means to support the outer end of said arbor and. means for pivoting said member to said frame about a vertical axis for swinging said brace member from working position.

2. In a cutting machine having a frame and a horizontal cutter arbor, a brace member provided with means to support the outer end of said arbor and said brace having a vertically disposed hinge the pivot of which is located at a point laterally -spaced from a vertical plane through said arbor whereby said member when swung about said pivot is removed from said arbor.

3. In a cutting machine having a frame, a horizontal arbor, an arbor yoke for supporting said arbor, a brace, means for hinging said brace to said frame to swing about a vertical axis, said brace having a slot, means on the arbor yoke extending through said slot to clamp the brace thereto whereby upon releasing said means the arbor may be moved relative to the brace.

4. In a cutting machine having a frame, a cutter arbor, an arbor yoke, a bolt on said yoke, a one piece brace having a portion engaging said yoke, means for hingedly mounting said brace on said frame, said brace having a slot for receiving said bolt and a clamping plate on the outer surface of said brace spanning said slot through which said bolt extends, a nut on said boltengaging said clamping plate and holding said brace firmly against said yoke.

5. In combination, a cutting machine having a frame, a horizontal arbor, an arbor yoke, a bolt on said yoke, a one piece brace, means for hingedly mounting said brace on said frame, said brace having a slot for receiving said bolt and a clamping plate on the outer surface of said brace spanning said slot through which said bolt extends, and a nut on said bolt engaging said clampl ing plate.

6. In combination, a cutting machine having a frame, a cutter arbor, an arbor yoke, a bolt on said yoke, a supporting brace, means for hinging said brace to said frame on a vertical axis, said brace being provided with a slot to receive said bolt, a clamping plate on the outer surface of said brace spanning said slot and through which said bolt extends, and a nut on said bolt engaging said clamping plate.

7. In combination, a cutting machine having a frame, a horizontal cutter arbor, an arbor yoke, a bolt on said yoke, a one piece supporting brace, means for'hinging said brace to said Vframe on a vertical axis, said brace being provided with a slot to receive said bolt, a clamping plate on the outer surface of said brace spanning said slot and through which said bolt extends, a nut on said bolt engaging said clamping plate.

8. In combination, a cutting machine having a frame, a cutter arbor, an arbor yoke, a bolt on said yoke, a supporting brace, means for hinging said brace to said frame including a removable pintle pin located in a vertical position to serve as an axis about which said brace swings said brace being provided with a slot to receive said bolt, a clamping plate on the outer surface of said brace spanning said slot and through which said bolt extends, and means for engaging said bolt for clamping the plate against said brace. v

9. In combination, a cutting machine having a frame, a horizontal cutter arbor, an arbor yoke, a bolt on said yoke, a one piece supporting brack-v et, means for hinging said bracket to said frame, including a removable pintle pin located in a vertical position to serve as an axis about which said brace swings said brace being provided with a slot to receive said bolt, a clamping plate on the outer surface of said brace spanning said slot and through which said bolt extends, and means for engaging said bolt for clamping the plate against said brace.

10. In combination, a cutting machine having a frame, a horizontal cutter arbor, an arbor yoke, double over arms to support said yoke, a bolt on said yoke, a supporting brace, means including a removable pintle pin for hinging said brace to said frame on a vertical axis located at one side of a vertical plane passing through said arbor, said brace provided with a vertical slot to receive said bolt, the marginal edges of said slot engaging said abutment surface, a clamp plate on the outer surface of said brace spanning said slot and through which said bolt extends, a nut on said bolt engaging said clamping plate, said brace also provided with` an opening intermediate its peripheral edge having an enlarged part and a narrow slot extending therefrom, a bolt hinged to said frame to extend through said slot and a nut on its end to engage and clamp said brace in position, said bolt being movable to permit said nut to pass thro-ugh the enlarged portion of said opening to permit hinging of said brace.

11. In combination, a cutting machine having a frame, a horizontal cutter arbor, an arbor yoke, double over arms to support said yoke, a bolt carried by said yoke, a supporting brace, means including a removable pintle pin for hinging said brace to said frame on a vertical axis located at one side of a vertical plane passing through said arbor, said brace provided with a vertical slot to receive said bolt, the marginal edges of said slot engaging a part on said yoke, a clamp plate on the outer surface of said brace spanning said slot and through which said bolt extends, a nut on said bolt engaging said clamping plate, a second hinged bolt on said frame, a slot in the edge of said brace to receive said hinge bolt, a nut on said bolt to engage and clamp said brace, said bolt being movable out of said slot to permit swinging of said brace.

12. In a cutting machine having a frame, a cutter arbor, an arbor yoke, a brace hinged to said frame to swing into engagement with said yoke, said brace having a slot therein, and means movable to two right angular positions to pass thru such slot in one position and span said slot in the other position to clamp the brace in place.

13. In a cutting machine having a frame, a cutter arbor, an arbor yoke, a brace hinged to said frame to swing into engagement with said yoke, said brace having a slot therein, a clamping plate engaging the outer surface of said brace and spanning said slot, said plate being of a width to pass thru said slot, a pin passing thru said plate and into said yoke for clamping said plate in position and releasing the same, said plate being turnable about said pin when released to be passed thru said slot and permit swinging of said brace from engagement with said yoke Without bodily separating any of the parts.

14. In a machine tool having a frame, a tool arbor, an arbor yoke, a brace hinged to said frame to swing into engagement with said yoke, said brace having an opening therein, and strap means registerable with said opening in'one position and movable out of registry therewith when in clamping position to span said opening and engage the brace to hold the same in place.

BENJAMIN P. GRAVES. ARTHUR F. BENNETT. 

